package com.sky.service.impl;

import com.github.pagehelper.Page;
import com.github.pagehelper.PageHelper;
import com.sky.constant.MessageConstant;
import com.sky.constant.StatusConstant;
import com.sky.dto.DishDTO;
import com.sky.dto.DishPageQueryDTO;
import com.sky.entity.Dish;
import com.sky.entity.DishFlavor;

import com.sky.exception.DeletionNotAllowedException;
import com.sky.mapper.DishFlavorMapper;
import com.sky.mapper.DishMapper;
import com.sky.mapper.SetmealDishMapper;
import com.sky.result.PageResult;
import com.sky.service.DishService;
import com.sky.vo.DishVO;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;

import java.util.ArrayList;
import java.util.List;

@Service
@Slf4j
public class DishServiceImpl implements DishService {

@Autowired
private DishMapper dishMapper;
@Autowired
private DishFlavorMapper dishFlavorMapper;
@Autowired
private SetmealDishMapper setmealDishMapper;

@Transactional
    public void saveWithFlavor(DishDTO dishDTO) {
        log.info("添加菜品：{}", dishDTO);
        Dish dish = new Dish();
        BeanUtils.copyProperties(dishDTO, dish);
        dishMapper.insert(dish);

        Long dishId = dish.getId();

    List<DishFlavor> flavors = dishDTO.getFlavors();
    if (flavors != null && flavors.size() > 0){
        flavors.forEach(dishFlavor -> dishFlavor.setDishId(dishId));
        dishFlavorMapper.insertBatch(flavors);
    }
}
    public PageResult pageQuery(DishPageQueryDTO dishPageQueryDTO) {
        PageHelper.startPage(dishPageQueryDTO.getPage(),dishPageQueryDTO.getPageSize());
        Page<DishVO> page = dishMapper.pageQuery(dishPageQueryDTO);
        return new PageResult(page.getTotal(),page.getResult());
    }

    @Transactional
    public void delete(List<Long> ids) {
        for (Long id : ids) {
            Dish dish = dishMapper.getById(id);
            if (dish.getStatus() == StatusConstant.ENABLE){
                throw new DeletionNotAllowedException(MessageConstant.DISH_ON_SALE);
            }
        }

        List<Long> setmealIdsByDishIds = setmealDishMapper.getSetmealIdsByDishIds(ids);
        if (setmealIdsByDishIds != null && setmealIdsByDishIds.size() > 0){
            throw new DeletionNotAllowedException(MessageConstant.DISH_BE_RELATED_BY_SETMEAL);
        }
//        for (Long id : ids) {
//            dishMapper.deleteById(id);
//            dishFlavorMapper.deleteByDishId(id);
//        }
        dishMapper.delete(ids);
        dishFlavorMapper.deleteByDishIdS(ids);
    }

    @Override
    public DishVO getByIdWithFlavor(Long id) {
        Dish byId = dishMapper.getById(id);
        List<DishFlavor> flavors = dishFlavorMapper.getByDishId(id);

        DishVO dishVO = new DishVO();
        BeanUtils.copyProperties(byId,dishVO);
        dishVO.setFlavors(flavors);
        return dishVO;
    }

    @Transactional
    public void update(DishDTO dishDTO) {
        Dish dish = new Dish();
        BeanUtils.copyProperties(dishDTO,dish);
        dishMapper.update(dish);
        dishFlavorMapper.deleteByDishId(dishDTO.getId());

        List<DishFlavor> flavors = dishDTO.getFlavors();
        if (flavors != null && flavors.size() > 0){
            flavors.forEach(dishFlavor ->
                    dishFlavor.setDishId(dishDTO.getId())
            );
            dishFlavorMapper.insertBatch(flavors);
        }
    }

    @Override
    public List<Dish> list(Long categoryId) {
    Dish dish = Dish.builder()
            .categoryId(categoryId)
            .status(StatusConstant.ENABLE)
            .build();
            return dishMapper.list(dish);
    }

    @Override
        public List<DishVO> listWithFlavor(Dish dish) {
            List<Dish> dishList = dishMapper.list(dish);

            List<DishVO> dishVOList = new ArrayList<>();

            for (Dish d : dishList) {
                DishVO dishVO = new DishVO();
                BeanUtils.copyProperties(d,dishVO);

                //根据菜品id查询对应的口味
                List<DishFlavor> flavors = dishFlavorMapper.getByDishId(d.getId());

                dishVO.setFlavors(flavors);
                dishVOList.add(dishVO);
            }

            return dishVOList;
        }
}
